Nov 1, 2022
A Practical Playbook for Improving LCP, INP, and CLS in a Next.js App
core-web-vitalslcpinpclsnextjsperformance
A hands-on cheat sheet for reducing LCP, INP, and CLS in real-world Next.js apps, focusing on images, JS bundles, backend calls, and layout patterns.
1Treat LCP as “when the main thing appears” and prioritize hero content accordingly
2Reduce INP by trimming client-side JS, lazy-loading heavy widgets, and avoiding long main-thread tasks
3Fix CLS by reserving space for images and dynamic blocks, and stabilizing fonts and layout
4Use Server Components for static sections and lazy-load charts, editors, and admin tools
5Combine lab tools (Lighthouse) with field data to decide which pages and interactions to optimize first